ECM MOTORS
RENEWAIRE.COM ECM MOTOR SUPPLEMENTAL MANUAL 1.800.627.4499
8
PLANNING
YOUR INSTALLATION
INSTALLATION
To avoid motor bearing damage
and noisy and/or unbalanced
impellers, keep drywall spray,
construction dust, etc., out of unit.
CAUTION
1. Before servicing or cleaning the unit, switch
power off at disconnect switch or service panel
and lockout/tag-out to prevent power from being
switched on accidentally. More than one discon-
nect switch may be required to de-energize the
equipment for servicing.
2. This installation manual shows the suggested
installation method. Additional measures may be
required by local codes and standards.
3. Installation work and electrical wiring must be
done by qualified professional(s) in accordance
with all applicable codes, standards and
licensing requirements.
4. Any structural alterations necessary for instal-
lation must comply with all applicable building,
health, and safety code requirements.
5. This unit must be grounded.
6. Sufficient air is needed for proper combustion and
exhausting of gases through the flue (chimney) of
fuel burning equipment that might be installed in
the area affected by this equipment. If this unit
is exhausting air from a space in which chim-
neyvented fuel burning equipment is located,
take steps to assure that combustion air supply
is not affected. Follow the heating equipment
manufacturer’s requirements and the combustion
air supply requirements of applicable codes and
standards.
7. Use the unit only in the manner intended by the
manufacturer. If you have questions, contact
the manufacturer.
8. This unit is intended for general ventilating only.
Do not use to exhaust hazardous or explosive
materials and vapors. Do not connect this unit to
range hoods, fume hoods or collection systems
for toxics.
9. When cutting or drilling into wall or ceiling, do not
damage electrical wiring and other hidden utilities.
10. If installed indoors this unit must be properly
ducted to the outdoors.
RISK OF FIRE, ELECTRIC SHOCK, OR INJURY. OBSERVE ALL CODES AND THE FOLLOWING:
WARNING
PRINCIPLES OF EXTERNAL CONTROL
The light commercial units with ECM motors are
designed for control by a wide variety of low voltage
(24VAC) controls to meet the ventilation needs of the
facility. These include time clock, occupancy sensor,
carbon dioxide sensor, building management system
(BMS) and others. These devices are commonly
known as 2-wire, 3-wire, and 4-wire devices. Re-
newAire offers separately the following for standalone
control of the ERV:
• Digital Time Clocks TC7D-W and TC7D-E
• Occupancy Sensors MC-C and MC-W
• Carbon Dioxide Sensor/Controllers CO2-W
and CO2-D
HE1X & HE1.5X ONLY
The external control device connects to the Light
Commercial unit to operate each blower independent-
ly or for one blower to act as leader and the other
blower to act as follower. When operating inde-
pendently, a single external switch or relay calls for
operation but each speed control motor can respond
independently to switch or analog signal source.
When acting as leader-follower, again, a single
external source calls for operation and then one motor
responds to the input signal. The Light Commercial
HE1X & HE1.5X units have the versatility that either
the exhaust air (EA) motor or the fresh air (FA) motor
can act as leader. Connection of an external control
device to the Light Commercial Unit is simple. All
external control device wires connect to a terminal
block(s) in the unit’s electrical box.
